Lower Lake, located in Harford Township, Pennsylvania, is a private recreational water resource regulated by the Pennsylvania Department of Environmental Protection. Built in 1919, this stone dam spans 100 feet in length and stands at a height of 7 feet, with a storage capacity of 123 acre-feet. The lake covers a surface area of 50 acres and has a drainage area of 2.3 square miles, fed by the East Branch Martin Creek.

With a low hazard potential and fair condition assessment, Lower Lake serves as a popular spot for outdoor enthusiasts seeking recreational activities such as fishing, boating, and picnicking. Despite its age, the dam remains structurally sound and is regularly inspected by state authorities to ensure public safety. Whether you're a water resource or climate enthusiast, Lower Lake offers a picturesque setting to enjoy nature and unwind in the heart of Susquehanna County.